const http=require('http')

const hostname='127.0.0.1'
const port=3000

const server=http.createServer((req,res)=>{
    res.statusCode=200
    res.setHeader('Content-Type','text/plain')
    res.end('Hello World\n')
}).listen(port,hostname,()=>{
    console.log(`Server running at http://${hostname}:${port}`)
})

process.on('SIGTERM',()=>{
  server.close(()=>{
      console.log("进程已终止");
  })  
})